• The Safety technology
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• no.89
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• pp.60-63
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• 2005

• Proceedings of the Korea Information Processing Society Conference
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• 2021.11a
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• pp.884-886
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• 2021

각종 건설 현장에서 안전모 미착용은 주된 위험 요인 중 하나이다. 현장에서 관리자가 직접 작업자들의 안전모 착용 여부를 감독할 수 있지만 관리자가 항상 관리가 가능한 장소에 있어야 하는 한계가 있다. 본 연구에서는 안전모 착용 여부를 딥러닝 기반으로 인식하여 건설 현장에서의 안전 관리를 할 수 있도록 하는 시스템을 제안한다. 이를 위해 대표적인 객체 인식 알고리즘인 YOLO를 사용하여 현장에서의 안전모 착용 여부를 인식한다. 다음으로는 인식된 결과를 바탕으로 위험 상황을 판단하는 알고리즘을 제안한다. 제안된 시스템을 활용하면 효율적으로 건설 현장의 위험 상황을 관리할 수 있을 것으로 기대된다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2023.07a
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• pp.349-350
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• 2023

본 연구는 농업 작업능률 향상에 적합한 작업복 개발을 위해 농업 종사자를 대상으로 작업복 착용실태 및 선호도, 필요 기능 등을 조사하고자 한다. 이를 통해 농촌의 작업능률을 향상시킬 수 있는 농촌 작업복 개발에 필요한 기초자료를 추출하고자 한다. 작업복을 착용하는 경우가 많았고 작업복 미착용 시는 트레이닝복이나 아웃도어를 착용하였다. 작업복 색상은 검정과 남색 등 어두운 색을 주로 착용하였다. 동작 시는 엉덩이, 무릎 등이 당기고 상의가 올라가 허리가 나오거나 바지 뒤가 당겨 내려가는 경우가 많았다. 작업복은 통기성, 흡습성, 신축성에 대한 불만이 가장 많았고 기능성, 활동성, 디자인, 작업효율성, 쾌적성 등의 기능을 중요하게 생각하였다. 향후 연구에서는 동작 분석을 통한 작업복 패턴을 개발할 필요가 있을 것으로 생각된다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.8
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• pp.395-400
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• 2020

Coronavirus disease 2019 (COVID-19) was identified in December 2019 in China and has spread globally, resulting in an ongoing pandemic. Because COVID-19 is spread mainly from person to person, every person is required to wear a facemask in public. On the other hand, many people are still not wearing facemasks despite official advice. This paper proposes a method to predict whether a human subject is wearing a facemask or not. In the proposed method, two eye regions are detected, and the mask region (i.e., face regions below two eyes) is predicted and extracted based on the two eye locations. For more accurate extraction of the mask region, the facial region was aligned by rotating it such that the line connecting the two eye centers was horizontal. The mask region extracted from the aligned face was fed into a convolutional neural network (CNN), producing the classification result (with or without a mask). The experimental result on 186 test images showed that the proposed method achieves a very high accuracy of 98.4%.

• The Journal of the Korea Contents Association
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• v.10 no.5
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• pp.267-276
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• 2010

The purpose of this study was to investigate the variations in gait parameters according to arm slings used in healthy adults. Twenty healthy adults (9 males, 11 females) participated in this study and walked at self-selected speeds on a GAITRite-instrumented carpet. They were randomly assigned conditions: without an arm sling, a care sling, a Harris hemi arm sling, a CVA sling, and a Rolyan humeral cuff sling. The following gait parameters were analyzed: the temporo-spatial parameters of gait velocity, swing phase, single support, cadence. In the comparison of parameters in each trial, step length was statistically significantly changed(p=.002). The right step length was significantly decreased in the Harris hemi arm sling and increased in the Rolyan humeral cuff sling when compared with no sling. This study found that several different types arm slings varied gait pattern in healthy adults.

• Journal of the Society of Disaster Information
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• v.18 no.1
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• pp.154-162
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• 2022

Purpose: The government intends to come up with measures to revitalize safety management at construction sites to shift safety management at construction sites from human capabilities to system-oriented management systems using advanced technologies AIoT and Mobile technologies. Method: The construction site safety management monitoring system using AIoT and Mobile technology conducted an experiment on the effectiveness of the construction site by applying three algorithms: virtual fence, fire monitoring, and recognition of not wearing a safety helmet. Result: The number of workers in the experiment was 215 and 7.61 virtual fence intrusion was 3.5% compared to the number of subjects and 0.16 fire detection were 0.07% compared to the subjects, and the average monthly rate of not wearing a safety helmet was 8.79, 4.05% compared to the subjects. Conclusion: It was found that the construction site safety management monitoring system using AIoT and Mobile technology has a valid effect on the construction site.

• Journal of Korean Ophthalmic Optics Society
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• v.12 no.3
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• pp.93-96
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• 2007

Research was taken its place in Dong wun elementary school in Gwang ju city. Subject ages were somewhere around 9 to 13. Among total number of 1,196, subjects with emmetropia were 384 people (32.1%), with 22.56% of 9 year old students, 16.01% of 10 year old student, 36.45% of 12 year old student, 39.11% of 13 year old. When age increases, the rate of emmetropia increase as well. Gender dependence of emmetropia rato was 31.07% for boys and 33.33% for girls, which proves girls with higher emmetropia ratio than boys. Among subjects with binocular vision acuity lower than 0.7, those require spectacles, only 37.5% of 9 years old students, 30.3% of 10 year old students, 44.64% of 12 year old students, and 30% of 9 year old students were wearing glasses. It shows that spectacle-wearing ratio is very low in spite of visual acuty lower than 0.7.

• Proceedings of the Korea Information Processing Society Conference
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• 2022.05a
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• pp.301-304
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• 2022

최근 개인형 이동장치의 사용이 증가하며 이와 관련된 안전문제가 제기 되었다. 그 중 높은 비중을 차지하는 헬멧 미착용에 대해 사용자들에게 헬멧의 거부감을 감소시키고 착용을 장려할 수 있는 서비스를 개발하여 실제 착용률을 증가시키고 사고시 위험 정도를 감소시킬 수 있는 애플리케이션을 설계하였다.

• Journal of Korean Ophthalmic Optics Society
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• v.7 no.1
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• pp.15-20
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• 2002

The Hydroxyethyl methacrylate(HEMA) was developped in 1960's and later the use of contact lenses increased. At present more and more people use RGP contact lenses. Due to the wide range of optical corrections available and due to their high oxygen transmission Japanese and Korean people like them. Nevertheless one of nine CL users(beginners) stopped wearing the CL within the first year. We conducted a survey to evaluate the level of patient compliance in lens care and maintenance and to assess practitioner knowledge of contact lens information. Generally 6% of contact lens wearers drop out per year. The aim of this research was to find out what opticians can do to reduce the drop-out rate by getting information on handling, on general data of the patient and on optical prescription. Lens wearer were asked to complete a 10 question survey that focused on lens care-wear modality, lens replacement, storage, symptoms and case disinfection. There were total 180 participants in the study. Most of contact lens wearers have an inadequate understanding of contact lens care system. Therefore, it is important that contact lens specialists place more emphasis on practitioner education about general contact lens fields and reinforce patient education during the dispensing visit.

• Journal of the Korea Institute of Construction Safety
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• v.2 no.1
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• pp.16-20
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• 2019

About 50% of disasters occurring at domestic construction sites are caused by the accidents not wearing personal protective equipment. Under the current statutes, employers are required to provide personal protective equipment and workers are required to wear personal protective equipment. However, there is insufficient compliance with wearing personal protective equipment on site. This study is about the measure of improving the system to the way of purchasing, wearing and managing personal protective equipment by individual workers, and refunding the cost of personal protective equipment to workers. It is expected that this thesis will improve the system of personal protective equipment effectively, and contribute to the prevention of disasters by settling the culture of wearing personal protective equipment.